Fastener for boxes containing machines



FIG. 1 is a top plan view of the fastener for boxes containing machines, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a rear view thereof; and,

FIG. 5 is a right side view thereof, the left side being a mirror image of the right side. 

The ornamental design of a fastener for boxes containing machines, as shown and described. 